User`s manual

Memory card Memory cards and batteries
MELSEC System Q, Hardware 5 – 9
5.1.4 Setting the write protect switch
The data of the SRAM and FlashROM memory card can be protected aginst erasing with the
write protect switch.
After shipping, the write protection of the memory card is switched off, so that changing of data
is possible all the time.
Fig. 5-9: Write protect switch of memory cards
Q3MEM-
Write protect switch
Write protect ON
Write protect
switch
Write protect ON